Auto-rebaseline for r181492

LayoutTests/compositing/geometry/limit-layer-bounds-overflow-root-expected.txt

 {
   "bounds": [800, 600],
   "children": [
     {
       "bounds": [800, 600],
       "contentsOpaque": true,
       "drawsContent": true,
       "children": [
         {
           "children": [
             {
               "position": [21, 21],
               "bounds": [100, 100]
             },
             {
               "bounds": [216, 142],
               "drawsContent": true
             }
           ]
         }
       ]
     }
   ]
 }